Liquid-filter.



No. 732,562. PATBNTBD SEPT. 22, 1903. o. SELG& o. GUNTRUM. LIQUID FILTER APPLICATION FILED APB. 20. 1903.

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UNITED STATES Patented September 22, 1903/.

PATENT OFFICE.

LIQUID'- FILTER.

SPECIFICATION forming part of Letters Patent No. 739,562, dated September 22, 1903,

Application iiled April 20, 1903. Serial No. 153.369. (No model.)

To (all whom t may concern;

Be it known that we, OTTO SELG and CARL GUNTRUM, citizens ofv the United States, residing at New York city,(Brooklyn,) county of Kings, and State of New York, have invented certain new and useful Improvements in Liquid-Filters, of which the following is a specication.

-This invention relates to a filter for beer, ale, water, and other liquids, which is so constructed that it can be readily taken apart and cleaned and that a iiltrate of superior clearness is obtained.

In the accompanying drawings, Figure lis a plan of our improved filter; Fig.l 2, a vertical central section of the same on line 2 2, Fig. 1; Fig. 3, a horizontal section on line 3 3, Fig. 2, with the filtering body removed; Fig. 4, a section through the compressing-ring with hand-bars attached; Fig. 5, a detail of the compressing-ring, showing it lowered; and Fig. 6, a similar detail showing it raised.

The letter a represents the cylindrical shell of the filter, having a base b and inclosing two concentric foraminated cylinders c d, iitted within annular grooves b b2 of base b. Each` cylinder is coarse-meshed and is provided with a tine-meshed lining c d'. By the construction described the're are formed three chambers e f g, the outer chamberv e being formed between the shell aand cylinder c,the central chamber f being formed between the cylinders c d, and the 'inner chamber g being formed within the cylinder d. At its upper end the shell a is hanged, as at a', to support 'an annular plate or outer cover h,which closes the outer chamber e and is hanged, as at h', to grasp the upper edge of outer cylinder c, to which it may be soldered. A gasket ,intenposed between the flange a and plate h, forms a water-tight joint. The inner chamber g is closed by a second cover-j, having a flange j', which grasps the upper edge of the inner cylinder d, to which it may be soldered. Upon the cover h is mounted an open cruciform third cover k, having'a strengthening-web 2c" and removably secured to the shell a by hinged locking-bolts k2, that pass likewise through peripheral slots of the cover h. A central clamping-screw Z, passing through a tapped opening of cover 7a, bears upon the cover j. By the arrangement described the parts are properly assembled and connected, while the outerand inner chambers are tightly closed.

The water or other liquid to be filtered en=. ters the outer chamber e through an inletr pipe or pipes m and .passes through the central chamber f into the inner chamber g and through an au xiliaryltering-chamber o,here inafter described, out through outlet-pipe The central chamber j' is the filtering-cham# ber proper and contains the pulp or other tiltering-body r. This pulp is tightly packed and compressed by means of a ring o of a Width to readily enter the chamber f. The bottom of ring o is concaved,Fig. 6, and to this bottom is screwed at p' a downwardly-curved flexible gasket p. Clamping-screws q, engaging tappedopenings of upper cover k,bear upon the top of ring o and serve to. force the same downward upon thelteringbody fr, Figs. 5 and 6. l

In filling thegchamber f with the filtering; body the latter is introduced in small quantities and tamped from time to time by the ring o. For tamping purposes handles s are screwed into holes o of yring o while the gasket p is removed. After the chamber f is properly filled the bars s are unscrewed from the ring and the gasket is reattached to the same. The ring is then placed upon thesurface4 of the fil tering body, so that the gasket p projects dowhward, Fig. 6. By now tightening up the screws g the ring is forced against the filtering-body andthe gasket is laterally expanded along the concave bottom of the ring to form a tight joint, Fig. 5.

Within the inner chamber g' is fitted a low foraminated cup t, covered on its top, sides,

-and bottom by filtering-cloth u and forming va small auxiliary ltering-chamber o, which communicates with the outlet-pipe n.

In use the ltering material is tamped into the chamber f and the cover lo is fitted 'in place. The bolts k2 are swung up and, tightened to lock the cover lo to the shell a, thus closing chamber c. The screws q and Z are then tightened to force the rin goandV cover j down and to thus properly close the Vfilteringehamber f and the inner chamber g.

The Water or other liquid entering chamber c will be thoroughly iltered within chamber f and by the auxiliary filtering-chamber fo and.

will then pass out through the outlet n. The ilter may be readily taken apart and cleaned by swinging down the bolts 7a2, removing the upper cover, and withdrawing the cylinders.

What we claim is- 1. A-1ilter composed of a shell, a pair of concentric foraminated cylinders to form three concentric chambers, filtering material Within the central chamber, a cover closing the outer chamber, a second cover closingpthe inner chamber, a ring Within the central chamber, and means for lowering said ring upon the filtering material, substantially as specified.

2. A filter composed ot a shell, a pair of concentric foraminated cylinders to form three concentric chambers, filtering material Within the central chamber, a cover closing the outer chamber, a second cover closing the inner chamber, a ring Within the central chamber, a third cover, and set-screws on the third cover which engage the ring, substantially as specified.

3. A filter composed of a shell, a pair of concentric foraminated cylinders to form three concentric chambers, ltering material Within the central chamber, a ring having a concave bottom, a flexible gasket secured to said bottom, a cover, and set-screws on the cover that engage the ring, substantially as specied.

.4. A filter composed of a shell, a pair of concentric foraminated cylinders to form three concentric chambers, filtering material Within the central chamber, a cover closing the outer chamber, a second cover closing the inner chamber, a ring Within the central chamber, a fieXible gasket secured to the ring, a third cover adapted to be locked to the shell, and set-screws on the third cover which engage the second cover and the ring, substantially as specied.

5. A filter composed of a shell, a pair of concentric foraminated cylinders to form three concentric chambers, filtering material Within the central chamber, a cover closing the outer chamber, a second cover closing the inner chamber, a ring Within the central chamber, a flexible gasket on the ring, a third cover adapted to be locked to the shell, setscrews on the third cover which engage the second cover and the ring, and an auxiliary filtering-cup Within the inner chamber, substantially as specified.

SignedbyusatNewYorkcity,(Manhattan,) New York, this 18th day of April, 1903.

OTTO SELG. CARL GUNTRUM.

Witnesses:

FRANK v. BRIESEN, EDWARD RAY. 

